One of the mysteries of the English language finally explained.
An instrument for measuring electric current in amperes.
- ‘Variations of resistance are shown on a ammeter which are then interpreted by the trained auditor.’
- ‘One man was hooking up what looked like an ammeter to a glob of flesh - she tried not to think of what it was, while another was examining a picture of a brain on a small computer screen.’
- ‘By connecting the system to a suitably calibrated ammeter, the temperature can be read.’
- ‘The question demanded to know what measurement an ammeter would give in the circuit.’
- ‘Imagine that conductive electrodes are then attached to the surfaces and connected through an ammeter having a low internal resistance.’
- ‘The current may be measured by digital ammeter to four or five decimal places so the accuracy of the calibration coefficient depends only on the accuracy of the calibrating interferometer.’
Late 19th century: from ampere + -meter.
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